/**
 * Copyright (C) 2013 DaiKit.com - daikit4gxt module (admin@daikit.com)
 *
 *         Project home : http://code.daikit.com/daikit4gxt
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
// $Id$
package com.daikit.daikit4gxt.server.gwtspring;

import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.google.gwt.user.server.rpc.RemoteServiceServlet;


/**
 * A {@link DkGwtRpcRemoteServletWrapper} that inject a custom {@link ServletConfig} in wrapped GWT
 * {@link RemoteServiceServlet}. <br>
 * <br>
 * Use this wrapper if you experience exceptions such as :<br>
 *
 * <pre>
 * java.lang.NullPointerException
 * 	at javax.servlet.GenericServlet.getServletContext(GenericServlet.java:160)
 * 	at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doUnexpectedFailure(AbstractRemoteServiceServlet.java:109)
 * </pre>
 *
 *
 *
 * @author tcaselli
 * @version $Revision$ Last modifier: $Author$ Last commit: $Date$
 */
public class DkExtendedGwtRpcRemoteServletWrapper extends DkGwtRpcRemoteServletWrapper
{
	private static final long serialVersionUID = 4847385905980307530L;

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * com.daikit.daikit4gxt.server.gwtspring.GwtRpcRemoteServletWrapper#handleRequest(javax.servlet.http.HttpServletRequest
	 * , javax.servlet.http.HttpServletResponse, java.lang.Object)
	 */
	@Override
	public void handleRequest(final HttpServletRequest request, final HttpServletResponse response, final Object handler) throws Exception
	{
		final ServletContext servletContext = request.getSession().getServletContext();
		final ServletConfig servletConfig = createServletConfig(servletContext);
		setServletConfig(servletConfig);
		super.handleRequest(request, response, handler);
	}

	protected ServletConfig createServletConfig(final ServletContext servletContext)
	{
		return new DkWrapperServletConfig(servletContext);
	}

}
